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Joined: Jun 2011
Hi guy's
Just completed a Hobby King Skyfun, ready for test flight, but i am concerned about the prop hitting a hand.
I have been working on a dolly for the last couple of days, tried it in the back yard ( very bumpy) and found it left the dolly to easily, though the field at NMAA club (Rosebud Vic) is a lot smoother.
I wondered if anyone has got a design that works ?
Modified with a EDF 2816 4600Kva with a 5.47 x5.47 prop SS 40amp ESC pulls 30 amps on 3S 2200 if i go to 4s jumps to 70 amps so will have to change ESC :-) but that's in the future.
Getting on a bit in years now and not quite so fast on the sticks, and a solo hand launch is scary.
My HK JetTiger ( modified motor ) flies well on 1500 3s even though it's a short time in the air.
Currently using the ASSAN 2.4 modules on JR388s X 4 of the blighters,
that's 32 model memory available and i am still ripping out receivers for new projects.
New box on the lounge floor ( HK 1.6 meter J3 clipped wing Cub the $114 version)at least i have all the stuff to complete it :-)
Reason for the post is to get some suggestions for a dolly or find out if someone has a working prototype.
Cheers TBBW
Posts: 5
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Joined: Jun 2011
Made a dolly out of a "U" shape piece of 4mm ply and foam blocks, foam supports at front and rear ( about where the vertical stabs are) the plane at rest sits at about a 10 degree angle
Used small control horns sticking up from foam blocks into large "Sullivan" exit guides in the wing close to the leading edge at the wing root, after 3 tries got it to fly. think i will need a third in the nose to stop the plane from wandering of the dolly, that accounts for two failed attempts.
Directional control of the dolly was done with a spare receiver on rudder Chanel,and a steerable nose wheel using independent power, I had some spare large diameter wheels laying round and the plane pushes the dolly easily to liftoff speed.
Overall it's a work in progress but shows promise, must confess to being surprised with the flight performance of the Skyfun, slows right down for landing and show a good turn of speed, though wants to climb as speed increases, think that has to do with the angle of the motor thrust line or CoG. I did take advice from someones post and made balsa elevons with pin hinges, btw using PVA is not recommended as it takes forever to dry ( something to do with the lack of air ?) I wound up using the toothpick method ( balsa pins so i could sand them flush ) and covered the gap while covering the wing.
Cheers TBBW
Posts: 5
Threads: 0
Joined: Jun 2011
Posts: 5
Threads: 0
Joined: Jun 2011
(This post was last modified: 04-07-2011, 09:31 AM by
Tsurwolf.)